Finding the Third Proportional to 1,221,168 and 1,868,112

Step by Step Solution

1. Step 1: Write the proportion equation
   1,221,168 : 1,868,112 = 1,868,112 : x
2. Step 2: Convert to fraction form
   1,221,168/1,868,112 = 1,868,112/x
3. Step 3: Cross multiply
   1,221,168x = 1,868,112 × 1,868,112
4. Step 4: Simplify right side
   1,221,168x = 3,489,842,444,544
5. Step 5: Solve for x
   x = 3,489,842,444,544/1,221,168
6. Step 6: Final answer
   x = 2,857,790.61